New kernel option nowait allows disabling the use of the wait instruction. (55d04dff) · Commits · 戴 / test

arch/mips/kernel/cpu-probe.c

+16 −0

Original line number	Original line	Diff line number	Diff line
	@@ -71,11 +71,27 @@ static void au1k_wait(void)
	: : "r" (au1k_wait));		: : "r" (au1k_wait));
	}		}

			static int __initdata nowait = 0;

			int __init wait_disable(char *s)
			{
			nowait = 1;

			return 1;
			}

			__setup("nowait", wait_disable);

	static inline void check_wait(void)		static inline void check_wait(void)
	{		{
	struct cpuinfo_mips *c = &current_cpu_data;		struct cpuinfo_mips *c = &current_cpu_data;

	printk("Checking for 'wait' instruction... ");		printk("Checking for 'wait' instruction... ");
			if (nowait) {
			printk (" disabled.\n");
			return;
			}

	switch (c->cputype) {		switch (c->cputype) {
	case CPU_R3081:		case CPU_R3081:
	case CPU_R3081E:		case CPU_R3081E: